Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 420 · 40 questions

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

1. 1.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
2. 2.Which of these is safe? (a) touch a fallen wire (b) fly a kite near wires (c) stop if a part gets hot (d) use a cable with cuts
3. 3.True or false: on a cell, “the longer symbol line” means the − (negative) end. (a) True (b) False
4. 4.True or false: on a cell, “usually the black wire” means the − (negative) end. (a) True (b) False
5. 5.🔘 Switch A is on the main wire next to the cell and the bulb; then the wire splits into two side-by-side paths, one with switch B and one with switch C. A is OFF, B is OFF and C is OFF. Does the bulb glow? (a) No (b) Yes
6. 6.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is ON, B is ON and C is ON. Does the bulb glow? (a) Yes (b) No
7. 7.True or false: aluminium foil is an insulator. (a) False (b) True
8. 8.True or false: a plastic straw is an insulator. (a) False (b) True
9. 9.💡 6 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 6 is taken out of its holder. Does bulb 2 glow? (a) Yes (b) No
10. 10.True or false: a straight line is the symbol for a cell. (a) False (b) True
11. 11.🔋 Does a cell give electricity or use electricity? (a) uses electricity (b) gives electricity
12. 12.🔁 What must there be for a current to flow? (a) a broken path (b) a plastic gap (c) one loose end (d) a complete loop
13. 13.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) motor (b) capacitor (c) wire (d) bulb
14. 14.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. All the bulbs are in place. How many bulbs glow?
15. 15.✏️ In a cell symbol, which line is the + terminal? (a) the longer line (b) both lines (c) the shorter line (d) neither line
16. 16.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to make bulbs dim (d) to save copper only
17. 17.🔋 3 identical 1.2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
18. 18.True or false: if the switch is ON, the circuit is closed and current flows. (a) True (b) False
19. 19.🔘 A cell and a bulb are joined to 2 side-by-side paths with one switch on each path — A and B (parallel). A is ON and B is ON. Does the bulb glow? (a) Yes (b) No
20. 20.🔍 Which is the odd one out? (a) use small battery cells (b) dry your hands first (c) touch a switch when wet (d) stay away from pylons
21. 21.True or false: a small empty box is the symbol for a resistor. (a) True (b) False
22. 22.✏️ Why do engineers draw circuits with symbols? (a) quick and clear for all (b) to make it colourful (c) symbols are heavier (d) to hide the circuit
23. 23.🔍 Which is the odd one out? (a) touch a switch when wet (b) take cells out after use (c) use a cable with cuts (d) climb an electric pole
24. 24.Which of these gives us electricity? (a) a water pump (b) a washing machine (c) an air conditioner (d) a generator
25. 25.🔋 3 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
26. 26.True or false: a wooden stick is a conductor. (a) False (b) True
27. 27.💡 5 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =
28. 28.🔘 Which kind of switch closes near a magnet? (a) a slide switch (b) a reed switch (c) a toggle switch (d) a push button
29. 29.🔋 7 identical 1.5 V cells are joined in series, but one of them is put in the wrong way round. What is the total voltage now (in volts)? =
30. 30.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a plastic ruler across the gap. Does the bulb glow? (a) Yes (b) No
31. 31.Which of these is an insulator? (a) aluminium foil (b) a plastic straw (c) a metal paper clip (d) a steel coin
32. 32.True or false: a push button works only while pressed. (a) False (b) True
33. 33.🔋 On a cell, does “usually the red wire” mean the + end or the − end? (a) + (positive) (b) − (negative)
34. 34.True or false: many long-short pairs is the symbol for a wire. (a) True (b) False
35. 35.⚠️ Is it safe to touch a switch when wet? (a) not safe (b) safe
36. 36.What does a toggle switch do? (a) works only while pressed (b) stays where you flip it (c) slides side to side (d) springs back when let go
37. 37.What does a tilt switch do? (a) slides side to side (b) stays where you flip it (c) closes when tipped over (d) works only while pressed
38. 38.✏️ In a circuit diagram, which part is drawn as a straight line? (a) capacitor (b) voltmeter (c) motor (d) wire
39. 39.🔍 Which is the odd one out? (a) a metal paper clip (b) a graphite rod (c) a copper wire (d) a rubber eraser
40. 40.🔘 Which kind of switch slides side to side? (a) a push button (b) a reed switch (c) a slide switch (d) a toggle switch

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